We’ll talk about the effect that drilling for oil in Alberta will have on climate change with Neela Banerjee, who writes about the topic for InsideClimate News. We’ll also get the perspective of Alan Jeffers, Exxon mobile media relations manager, about the company’s role in the dialogue about the risks of climate change.

Silas Chamberlin joins us to talk about how the 19th Century urban walking clubs developed into a leisure activity practiced in every state in the union. His new book is called “On the Trail: A History of American Hiking.”

Sander L. Gilman, a psychiatry professor at Emory University, joins us to talk about classifying racism as a mental illness. He writes about the idea in “Are Racists Crazy: How Prejudice, Racism, and Antisemitism Became Markers of Insanity.”

Firestone and Robertson Distilling Company head distiller Rob Arnold and TCU chemistry professor Eric Simanek join us to talk about how grain and water combine to make bourbon, rye and scotch. They explain the process in “Shots of Knowledge: The Science of Whiskey.”

This hour, we’ll talk about strategies for motivating others with Duke professor of psychology and behavioral economics Dan Ariely. He writes about the topic in “Payoff: The Hidden Logic That Shapes Our Motivations.”

This hour, we’ll talk about the scientists, elected officials and philanthropists working to save the world with TED science curator David Biello, author of “The Unnatural World: The Race to Remake Civilization in Earth’s Newest Age.”